Home / 2,381.27-3,276.20-2,171.39

Finding the Fourth Proportional to 2,381.27, 3,276.20 and 2,171.39

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Solution

The fourth proportional to 2,381.27, 3,276.20 and 2,171.39 is: 2,987.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.27 : 3,276.20 = 2,171.39 : x
  2. Step 2: Convert to fraction form
    2,381.27/3,276.20 = 2,171.39/x
  3. Step 3: Cross multiply
    2,381.27x = 3,276.20 × 2,171.39
  4. Step 4: Simplify right side
    2,381.27x = 7,113,897.06
  5. Step 5: Solve for x
    x = 7,113,897.06/2,381.27
  6. Step 6: Final answer
    x = 2,987.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.